Annie's recalls frozen pizza that could contain metal fragments

Annie's initiated a voluntary recall Tuesday of Annie's Homegrown Frozen Pizza due to possible fragments of metal caused by a faulty screen at a flour mill, a revelation that caused the company's shares to nose-dive in after-hours trades.

The affected pizza products are distributed at grocery, mass and natural food stores throughout the United States, the natural and organic foods company said. Berkeley-based Annie's said the fragments consist of flexible metal mesh.